# Rationale
- Talk about device names used in /etc/fstab
- autoconf: device are named driver+unit, unit is just the next unused unit number
- static hardware has well-defined device names
- not-so static hardware often has distinction between different controllers and thus maybe different drivers
- partitions on device names are just private count (a,b,c,...) per device
- wedges are partitions that look like units for a single same driver
- no distinction by controller / driver
- no distinction by private counter
# Wedge names
- Wedges are a unified interface to partitions
- One wedge carries one filesystem
- Can have a name that defaults to a UUID
- Names can be looked up in userland
- util function getfsspecname()
- Patches for userland tools (mount,umount,swapctl,fsck,quotaon,quotacheck,edquota,dumpfs,tunefs,dump)
- Kernel interface still uses driver+unit.
- No reverse mapping, e.g. for df